Filter



No. 623,324. Patented Apr. l8, I899. M. LEVI.

FILTER.

(Application filed Apr. 26, 1898.)

3 Shaets$hoet I.

(No Model.)

m: sokms PETERS co. PNOTO-LITHO,WASM1NGTON, a c.

No. 623,324. Patented Apr. l8, I899, u. LEVI.

FILTER.

(Application filed Apr. 26, 1898.)

(No Model.) 3 Sheets-Sheet 2.

m; ncxms PETERS co. Moro-urns WASHINGTON. o. c.

No. 623,324.- Patented Apr. I8, I899. M. LEVI.

FILTER.

(Application filed Apr. 26, 1898.)

(No Model.) 3 Sheets-Shaet 3.

lh'" IIIIHIII I" lllllllll Ill ilrtrrn STATES PATENT Orrrcn.

MORDIGAI LEVI, OF CHARLESTON, VEST VIRGINIA.

FILTER.

SPECIFICATION forming part of Letters Patent No. 623,324, dated April18, 1899.

Application filed April 26, 1898- Serial No- 678.8'73- (No model.)

'1 '0 all LII/tom it may concern:

Beit k nown that I, MORDICAI LEVI, a citizen of the United States,residing at Charleston,

county of Kanawha, State of'West Virginia, have invented certain new anduseful Improvements in Filters, of which the following is aspecification.

My invention relates to filters, and is designed for filters of largesize to be used in connection with the supply of water for cities andtowns, though not necessarily limitedin point of dimensions.

My invention is illustrated in the accompanying drawings, in whichFigure 1 represents the apparatus partly in side elevation and partly insection. Fig. 2 shows a partial longitudinal section of thefilter-chambers detached. Fig. 3 is a section on line 2 2, and Fig. 4 asection on line 3 3 of Fig. 2. Fi 5 is a cross-section of Fi 2 with a ID r b parts omitted. Figs. 6 and '7 show details of construction.

In the drawings, A represents a filteringtank, the shell of which ismade of any suitable material, such as boiler-iron, and any dimensionsuitable for the work for which it is designed. It is provided at anyconvenient point in the upper partwith a supply-pipe, as R, and with themanhole r. The upper part is formed without partitions and affords aclear space for sand or any other suitable filtering material. In thebottom of this tank is arranged a series of special filters, throughwhich the water'is compelled to pass in order to find its way throughthe eXit-pipe 19. These filters are held in radially-arranged cageswhich open to the outside and which extend from the shell horizontallytoward the center of the tank. In Fig. 3 one of these cages is shownatl, while others of the series are shown at 2, 3, and 4-, and it willbe under-' stood that they extend in similar manner around the wholeperiphery of the cylindrical tank. One only of these cages need bedescribed, as all are of the same construction. Reference is had for theone described in the partial section in Fig. 2 and to the details in theother figures showing this part. The cage is shown at E. It consists ofa casting formed with transverse bars 6 and intermediate open spaces 6across the upper part and with longitudinal water-spaces f in the lowerpart.

as there is no opening for the egress of the water excepting through thespaces between the upper bars the pressure within the tank forces thewater through these spaces and through the filtering material in thecase and through the spaces below into the channelsf, whence it escapesthrough a pipe binto a central chamber M, thence down a central passageN to a separator O, and thence to the discharge-pipe p. The case whichholds the filtering material within the cage is preferably made ofcopper thickly perforated to admit transverse passage of the water,andit is made tapering to fit in the cage.

The cage is preferably threaded upon its inner end and held upon thewall by threaded connection with an annular flange 0. On

the outside is another annular flange B, in which is inserted ascrew-plug D, adapted to close the opening. The opening in the flange Bis sufficient to admit the case, and it may therefore be withdrawn forcleansing or renewing the filtering material. I have providedlongitudinal grooves g on each side of the inner face of the cage, andinto these flanges h on the outside of the case are fitted when the caseis in place, thus supporting the case equally in the cage, and movableplugs (Z may be used to hold these in place.

For the purpose of keeping clear the perforations in the shell of thecase I have provided a central rod is, which is fitted through astuffing-box Z and through the cap D and passes axially through theextent of the case, carrying a spirally-coiledrod or bar throughout itswhole extent, this spiral coil bearing against the innersurface of thecase. Means are provided whereby the rod may be caused to revolve withthe coil, whereby the inner face of the case is rubbed to keep open theperforation through the shell of'the case.

A stirring mechanism is provided in the upper part of the tank, whichconsists of a vertically-movable rod m, passing through a stuffing-boxin the center of the top and having suitable means for turning andmoving it. It is provided with horizontal arms 7'11, radially arrangedand adapted to be turned with the rod at any point-of elevation, andthus to prevent the filtering material from becoming compacted.

I claimy l. A filtering-tank having a series of radiating filter-casessupported Within said tank, a centrally-arranged discharge-pipe andconnections from the filter-cases thereto, substantially as described.

2. A filtering-tank having a series of radiating filter-cases, supportedin the said tank,

. and removable outwardly through the wall of the tank, and a commondischarge-passage for said cases, substantially as described.

A filtering-tank having a series of radiating cages supported withinsaid tank, a central space in said cages for holding filtering 5. Aseries of cages arranged radially in a filtering-tank, having openingson one side to the interior which contains filtering material, and alsoopenings which lead from the interior to passages in said cages, incombination with passages leading from the series to a commondischarge,substantially as described.

6. In combination with the tank, a series of cages fixed to flanges onthe walls and con nected to a common discharge, openings in the wall ofthe tank leading to the interior of the cages, cases for filteringmaterial, fitted to the interior of said cages, removable through saidopenings, and means for closing said openings, substantially asdescribed.

7. In combination with the cage and case, a central rod carrying aspiral cleansing device, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

. MORDICAI LEVI. Witnesses:

C. H. HATCHER, STEPHEN SHANAHAN.

